Johan wrote:
> by "rectangular", do you mean no windowing function at all;
> just raw FFT?

Yes I mean no window at all.   When I tried some other windows
the S/N went down a little.

Some windows compared:

 http://abelian.org/vlf/tmp/29499_140303_180_90_windows.png

and I've ranked them in descending order of S/N.  Some of the
other windows would be best if you had a strong signal that
was scalloping over onto a weaker signal.

--
Paul Nicholson
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